Good stuff, let it burn. The system is working as intended. People who made very very risky dumb bets are getting punished heavily for it.
From most accounts it seems to be a very tight ecosystem with a lot of close relationships between VCs, service providers, and serial founders. Very easy to see how it could develop high-impact dependencies that are very close to single points of failure.
YC companies that have been exposed so badly through this are probably non-essential.
My company is also exposed and we will suffer, because we were stupid but luckily not complete morons
This is part of a healthy economic market according to market economic theory.
The obviously risky bet is that the rates would stay 0.